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Transit activity in SF Bay Area for November


All 50 states in the U.S. have begun to reopen in some way after the coronavirus thrust the country into lockdown starting in March. Some areas have paused plans to reopen amid rising case counts, while others have forged ahead despite them. Others are pausing or reversing their reopening plans (see NYT's Reopen Map).

Apple’s Mobility Trends dataset shares changes in the number of requests for Apple Maps directions on a daily basis, indexed to 13-01-2020 (which is set to 100). The data is updated daily and identifies trends for driving, walking, and transit for various cities, countries and regions across the world.

What will the Apple Mobility Trends report as the mean level of transit activity in San Francisco — Bay Area for the week 2020-11-22 through 2020-11-28 (inclusive)?


  • This question resolves as the mean of the values reported by the Apple mobility data, also linked above, for the dates 2020-11-22 through 2020-11-28 (inclusive).

Example: For San Francisco — Bay Area during the week of 2020-08-25 to 2020-08-31, the values for transit activity were:

  • 2020-08-25: 34.92
  • 2020-08-26: 35.07
  • 2020-08-27: 34.54
  • 2020-08-28: 36.68
  • 2020-08-29: 30.77
  • 2020-08-30: 31.84
  • 2020-08-31: 33.91

So the mean over this period would be 33.96—thus, a similar question for that period would resolve at 33.96.


  • Daily updated data for San Francisco — Bay Area, amongst other locations relevant to other questions, is available here (available both in CSV and Excel files.

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